Abstract
A theoretical investigation of surface polaritons in the circularly cylindrical geometry is presented. The complete set of Maxwell's equations (retardation effects are not neglected) is solved with the simple dielectric function, , where is the bulk plasma frequency. The resulting transcendental equation for the eigenfrequencies is solved via numerical methods for three representative values of the cylindricality constant, , where is the cylinder radius and the velocity of light. In addition to the real nonradiative surface plasmons, various virtual radiative surface plasmons exist with properties depending rather strongly on . The results are compared with existing experimental data. Further experiments are proposed in order to reveal the most interesting features of the surface plasma modes.
- Received 19 February 1974
DOI:https://doi.org/10.1103/PhysRevB.10.3038
©1974 American Physical Society